Perkoa is comprised of an underground mine and a milling plant of 1Mt/a. Initially, Glencore and Blackthorn entered into a joint venture agreement for the development of the project. In August 2014, following the approval by Blackthorn Resources' shareholders, the sale of the company's remaining equity interest in the Perkoa mine to Glencore was completed for settlement proceeds of US$10 million. Wood Mackenzie’s asset reports are built from the bottom up, incorporating a number of granular data metrics to ultimately produce our industry standard cash operating costs. This report contains a detailed asset note giving you a holistic view of the asset, including an operational overview through to a timeline of events from inception to now. This qualitative analysis is supplemented by the associated Excel download which enables interrogation of a whole series of cost and production metrics over the life of the asset.